I owe my success to the fact that I never had a clock in my workroom.

Success is 90% perspiration and 10% inspiration!

There's always gonna be another mountain, I'm always gonna wanna make it move, Always gonna be a uphill battle, Sometimes I'm gonna have to lose, Ain't about how fast I get there, Ain't about what's waiting on the other side, It's the climb.

The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.

My success is due more to my ability to work continuously on one thing without stopping than to any other single quality.

The first requisite for success is to develop the ability to focus.